EP 1524322 A2 20050420 - Method of liquid steel production with slag recycling in a converter, equipment to employ the method
Title (en)
Method of liquid steel production with slag recycling in a converter, equipment to employ the method
Title (de)
Verfahren zur Herstellung von geschmolzenem Stahl mit Recycling von Schlacken im Konverter, sowie Vorrichtung zum Einsatz dieser Methode
Title (fr)
Procédé de production d'acier liquide en recyclage de laitiers dans le convertisseur, et equipement pour mettre en oeuvre ce procédé
Publication
Application
Priority
- CZ 20032815 A 20031015
- CZ 20033207 A 20031124
Abstract (en)
The invented method consists of the fact that slag from the end of a steelmaking process in a converter is recycled at the beginning of the steel converter process. Once the silicon oxidises, the slag is removed and substituted with new slag made of lime in particular as well as other admixtures, as the case may be. It means that the slag is not removed at the end of the steelmaking process, but in the middle of it. This decreases the amount of the slag due to better utilisation of the refining capacity of the slag and due to a smaller content of iron oxides while preserving desired characteristics of the metal. Application of the process thus increases metal yields. Auxiliary equipment makes slag-off easier.
IPC 1-7
IPC 8 full level
C21B 3/06 (2006.01); C21C 5/36 (2006.01); C21C 7/00 (2006.01)
CPC (source: EP)
C21B 3/06 (2013.01); C21C 5/36 (2013.01); C21C 7/0087 (2013.01); C21B 2400/022 (2018.07); Y02P 10/20 (2015.11); Y02W 30/50 (2015.05)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1524322 A2 20050420; EP 1524322 A3 20060802; EP 1524322 A8 20050727
DOCDB simple family (application)
EP 04008654 A 20040408